Nested QuerySet Iteration

Goal: Provide a concise, high-level view of TaskFlow's architecture — to help onboarding and future development. Tension: architecture to help onboarding and future development. Outcome: A small Python monolith exposing both a CLI (Click) and a REST API (FastAPI). | Overall structure: A small Python monolith exposing both a CLI (Click) and a REST API (FastAPI) — share a common domain model and a SQLite persistence layer. Outcome: share a common domain model and a SQLite persistence layer. | Summary: - Goal: Provide a concise, high-level view of TaskFlow's architecture — TaskFlow's architecture. Tension: help onboarding and future development. Outcome: Overall structure: A small Python monolith exposing both a CLI (Click) and a REST API (FastAPI) that share a common domain model and a SQLite persistence layer.